Sulfur hexafluoride gas supplementing equipment

Abstract

The utility model discloses sulfur hexafluoride gas supplementing equipment which comprises a cabinet body, the outer side wall of the cabinet body is provided with a bottle body mounting groove used for mounting a sulfur hexafluoride storage bottle, the bottom of the cabinet body is provided with rollers, the front end opening of the cabinet body is provided with a cabinet door I, and the cabinet body is internally provided with a control element mounting plate, a circuit element mounting plate and a gas path element mounting plate. A control element is mounted on the control element mounting plate, and a control mainboard electrically connected with the control element is mounted on the circuit element mounting plate; and a gas supplementing pipeline, a gas humidity detection pipeline and a vacuumizing pipeline are mounted on the gas path element mounting plate. Before and after gas supplementation, residual gas in the gas supplementation pipeline is emptied through the vacuumizing pipeline and is collected in the tail gas collecting device, so that environmental pollution caused by sulfur hexafluoride gas leakage is avoided; the pressure reducing valve and the pressure sensor cooperate to monitor the pressure and the flow of the sulfur hexafluoride gas flowing through the gas supplementing pipeline in the gas filling process, so that an operator can know the current gas supplementing state in real time, and the phenomenon of over-filling or under-filling of the gas chamber of the electric equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur hexafluoride gas replenishment, in particular to sulfur hexafluoride gas replenishment equipment. Background Art

[0002] Sulfur hexafluoride (SF6), a highly effective insulating and arc-extinguishing medium, is widely used in power systems, particularly in high-voltage circuit breakers, GIS (gas-insulated switchgear), TA (current transformer), and other equipment. However, due to the diversity of SF6 gas supply equipment and the complexity of field conditions, traditional SF6 gas filling devices face numerous challenges in practical operation.

[0003] The common sulfur hexafluoride inflators on the market currently include the following types:

[0004] (1) Manual inflation device, which usually consists of a manual pump, a pressure gauge, an inflation pipe, and a connecting joint. The operator needs to manually operate the pump to inflate, which is slow and cumbersome.

[0005] (2) Electric inflation device: This device is driven by an electric pump and can achieve automatic inflation, but the device is large in size, not portable, and has a high cost.

[0006] (3) Fixed filling station: This device is usually installed in a fixed location, such as a substation. The equipment is complex and requires special personnel to operate. It is not suitable for field operations.

[0007] For this reason, a variety of mobile and portable sulfur hexafluoride gas replenishing equipment have appeared on the market. Most of these devices are vehicle-mounted devices, which only solve the problem of moving sulfur hexafluoride storage cylinders. For example, the Chinese utility model patent with application number 202222454610.1 discloses a sulfur hexafluoride gas cylinder heating device, including a box body, a lifting plate is provided inside the box body, a slide is provided on the top of the lifting plate, a guide rail is provided between the slide and the lifting plate, and the guide rail is installed on the top surface of the lifting plate, and the slide and the guide rail are slidably connected, a steel cylinder is provided inside the slide, and the bottom of the steel cylinder is embedded in the inside of the slide, a heating plate is provided inside the box body, and the heating plate is installed on the inner wall of the box body, and a control box is installed on the back of the box body. The portable heating method is suitable for on-site gas replenishment of sulfur hexafluoride equipment, meeting the heat required for vaporization, ensuring the inflation speed, and at the same time facilitating safe transportation for maintenance personnel and improving the reliability of safe production. The problems with this type of portable sulfur hexafluoride gas filling equipment are: (1) the lack of an intelligent control system, which makes it impossible to monitor the pressure and flow rate during the filling process in real time, making it easy to overfill or underfill; (2) the lack of environmental awareness, and insufficient attention to the environmental protection issues of SF6 gas leakage during the filling process, and the lack of effective sealing and recovery measures. This utility model aims to propose a sulfur hexafluoride gas filling equipment to solve the above technical problems. Summary of the Invention

[0008] The purpose of the utility model is to overcome the defects in the prior art and provide a sulfur hexafluoride gas replenishing device. When replenishing sulfur hexafluoride gas to the gas chamber of the electrical equipment, the residual gas in the gas replenishing pipeline is first emptied through the vacuum pipeline and collected in the tail gas collection device. Secondly, the humidity of the gas flowing out of the sulfur hexafluoride storage bottle is detected through the gas humidity detection pipeline to determine whether the gas humidity index meets the gas replenishment requirement. The sulfur hexafluoride gas is replenished to the gas chamber of the electrical equipment that needs gas replenishment through the gas replenishing pipeline again. Finally, after the gas replenishment is completed, the residual gas in the gas replenishing pipeline is emptied again through the vacuum pipeline and collected in the tail gas collection device, thereby avoiding the sulfur hexafluoride gas Leakage causes environmental pollution problems; the pressure reducing valve has pressure and flow indication functions, so that the pressure and flow of sulfur hexafluoride gas flowing through the air supply pipeline during the inflation process can be monitored, and the pressure sensor located at the air outlet end of the air supply pipeline can feed back the current air pressure value inside the air chamber of the electrical equipment to the control element in real time, so that the operator can understand the current air supply status in real time, and effectively avoid the occurrence of overfilling or underfilling of the air chamber of the electrical equipment; the whole set of equipment can be moved and has good portability and flexibility; the control element mounting plate, circuit element mounting plate and gas path element mounting plate are all installed inside the cabinet, with good waterproof and dustproof effects, which helps to extend the overall service life of the equipment of this invention.

[0009] To achieve the above-mentioned object, the technical solution of the present utility model is to design a sulfur hexafluoride gas replenishing device, comprising a cabinet, wherein the outer wall of the cabinet has a bottle mounting groove for mounting a sulfur hexafluoride storage bottle, the bottom of the cabinet is equipped with rollers, the front opening of the cabinet is equipped with a cabinet door, and the interior of the cabinet is equipped with a control element mounting plate, a circuit element mounting plate, and a gas path element mounting plate, wherein the control element is mounted on the control element mounting plate, and the circuit element mounting plate is equipped with a control mainboard electrically connected to the control element;

[0010] The gas circuit component mounting plate is equipped with an air supply pipeline, a gas humidity detection pipeline and a vacuum pipeline. The gas outlet of the sulfur hexafluoride storage bottle installed inside the bottle body mounting groove, the gas inlet end of the air supply pipeline and the gas humidity detection pipeline are respectively connected to an interface of the tee piece 1. The air supply pipeline is provided with a solenoid valve 1, a tee piece 2, a solenoid valve 2, a tee piece 3 and an air supply joint in sequence along the direction of gas travel. A pressure sensor is also provided on an interface of the tee piece 3. The gas humidity detection pipeline is provided with a solenoid valve 1, a tee piece 2, a solenoid valve 2, a tee piece 3 and an air supply joint in sequence along the direction of gas travel. A solenoid valve three and a moisture detection sensor are provided. The vacuum pipeline is sequentially provided with a solenoid valve four and an air pump along the direction of gas travel. The air inlet end of the solenoid valve three is connected to an interface of the tee piece one, and the air inlet end of the solenoid valve four is connected to an interface of the tee piece two. The air outlet of the moisture detection sensor, the air outlet of the air pump, and the air inlet end of the air outlet pipe are respectively connected to an interface of the tee piece four. A pressure reducing valve with pressure and flow indicating functions is further provided on the pipeline connecting the air outlet of the sulfur hexafluoride storage bottle and the tee piece one.

[0011] The solenoid valve 1, solenoid valve 2, solenoid valve 3, solenoid valve 4, moisture detection sensor and air pump are all electrically connected to the control mainboard.

[0012] The utility model discloses a sulfur hexafluoride gas replenishing device. When replenishing sulfur hexafluoride gas to the gas chamber of an electrical device, the device first evacuates the residual gas in the gas replenishing pipeline through a vacuum line and collects the gas in the tail gas collection device. Secondly, the gas flowing out of the sulfur hexafluoride storage bottle is tested for humidity through a gas humidity detection line to determine whether the gas humidity index meets the gas replenishment requirement. The gas chamber of the electrical device that needs gas replenishment is replenished with sulfur hexafluoride gas again through the gas replenishing pipeline. Finally, after the gas replenishment is completed, the device again evacuates the residual gas in the gas replenishing pipeline through a vacuum line and collects the gas in the tail gas collection device, thereby avoiding the problem of environmental pollution caused by sulfur hexafluoride gas leakage. The occurrence of; the pressure reducing valve has the function of pressure and flow indication, so that the pressure and flow of sulfur hexafluoride gas flowing through the air supply pipeline during the inflation process can be monitored, and the pressure sensor located at the air outlet end of the air supply pipeline can feed back the current air pressure value inside the air chamber of the electrical equipment to the control element in real time, so that the operator can understand the current air supply status in real time, and effectively avoid the occurrence of overfilling or underfilling of the air chamber of the electrical equipment; the whole set of equipment can be moved and has good portability and flexibility; the control element mounting plate, circuit element mounting plate and gas path element mounting plate are all installed inside the cabinet, with good waterproof and dustproof effects, which helps to extend the overall service life of the equipment of the utility model.

[0013] A preferred technical solution is that the control element is a touch screen; the circuit element mounting plate is also equipped with a voltage regulation module and a wireless communication module, both of which are electrically connected to the control mainboard. The touch screen is easy to operate and requires minimal operator expertise. The voltage regulation module can flexibly adjust to the appropriate operating voltage based on the needs of the electrical equipment being recharged, contributing to the flexibility and applicability of the device. The wireless communication module can transmit charging status data to a remote client, such as a mobile phone app, eliminating the need for an operator to monitor the operation on-site.

[0014] A further preferred technical solution is that a battery is installed within the cabinet to supply power to the voltage regulation module, the control mainboard, and the wireless communication module. A solar photovoltaic panel connected to the battery is mounted on the top of the cabinet. The energy generated by the solar panel is stored in the battery, thereby conserving utility power and meeting energy conservation and emission reduction requirements.

[0015] A further preferred technical solution is that the cabinet has several compartments at the lower end thereof, including an adapter storage box for storing the gas supply adapters, with the batteries and adapter storage box each placed in one of the compartments. The placement of both the batteries and adapter storage box in the compartments within the cabinet creates a rational cabinet layout and strong practicality.

[0016] A further preferred technical solution is that the control element mounting plate, circuit element mounting plate, and pneumatic element mounting plate are fixedly mounted vertically and parallel to each other in the front-to-back direction at the upper end of the cabinet interior, with the control element mounting plate located near the first cabinet door. The control element mounting plate, circuit element mounting plate, and pneumatic element mounting plate are rationally arranged and installed within the cabinet interior, and the location of the control element mounting plate near the first cabinet door ensures convenient operation during use.

[0017] Another preferred technical solution is that the rear sidewall of the cabinet is fixed to the main frame, and a side frame extending rearward is fixed to each of the left and right sides of the main frame. Several curved support plates with concave curved surfaces facing rearward are spaced apart along the longitudinal length between the two side frames. A horizontal support plate is also fixed between the two side frames at the bottom. The main frame, two side frames, several curved support plates, and horizontal support plates together form the bottle mounting groove. The roller is mounted on the lower end of the front side of the main frame and is located correspondingly below the bottom of the cabinet. The bottle mounting groove has a rational structural design, ensuring convenient installation and removal of sulfur hexafluoride storage bottles within it.

[0018] A further preferred technical solution is that the rear side surfaces of the two side frames are further provided with retaining rings for receiving locking chains to restrain the sulfur hexafluoride storage bottle within the bottle body mounting groove. When the sulfur hexafluoride storage bottle is installed within the bottle body mounting groove, the locking chains connected to the retaining rings of the two side frames restrain the sulfur hexafluoride storage bottle, thereby preventing the sulfur hexafluoride storage bottle from slipping out of the mounting groove, thereby ensuring the safety of the gas replenishment device during use.

[0019] A further preferred technical solution is that the upper end of the cabinet has a bottle insertion groove extending above the bottle mounting groove. The rear end of the bottle insertion groove is connected to the cavity within the cabinet, the lower end is open, and the front side has a second cabinet door. When the sulfur hexafluoride storage bottle is installed in the bottle mounting groove, the upper end of the sulfur hexafluoride storage bottle is inserted into the bottle insertion groove. The insertion of the upper end of the sulfur hexafluoride storage bottle into the bottle insertion groove at the upper end of the cabinet ensures the overall safety of the sulfur hexafluoride storage bottle when inserted and installed inside the bottle body, and ensures convenient connection between the air outlet located at the top of the sulfur hexafluoride storage bottle and the pressure reducing valve.

[0020] A preferred technical solution further includes a heating element wrapped around the outside of the sulfur hexafluoride storage cylinder, the heating element being electrically connected to the control motherboard. When the ambient temperature is too low, such as in winter, the heating element can be used to heat the sulfur hexafluoride storage cylinder to ensure that the sulfur hexafluoride gas inside the sulfur hexafluoride storage cylinder is quickly discharged, thereby further improving the efficiency of using the gas replenishment device of the utility model to inflate electrical equipment.

[0021] A further preferred technical solution is that handles are provided on the upper ends of the outer walls of the left and right sides of the cabinet; a plurality of ear plates are fixedly provided in the middle of the outer walls of the left and right sides of the cabinet, and a plurality of diagonal braces are provided. The upper ends of the diagonal braces and the ear plates each have mounting holes, and the upper ends of the diagonal braces are fixed to the ear plates via bolt assemblies that penetrate the mounting holes. The handles provided on the outside of the cabinet help improve the convenience of moving the gas replenishing device of the utility model; the diagonal braces provide reinforcement and support for the cabinet, thereby preventing the cabinet from tilting or falling due to external forces, thereby improving the stability of the gas replenishing device of the utility model during use.

[0022] The advantages and beneficial effects of the utility model are:

[0023] 1. The utility model is a sulfur hexafluoride gas replenishing device. When replenishing sulfur hexafluoride gas to the gas chamber of the electrical equipment, the residual gas in the gas replenishing pipeline is first emptied through the vacuum pipeline and collected in the tail gas collection device. Secondly, the humidity of the gas flowing out of the sulfur hexafluoride storage bottle is detected through the gas humidity detection pipeline to determine whether the gas humidity index meets the gas replenishment requirements. The sulfur hexafluoride gas is replenished to the gas chamber of the electrical equipment that needs gas replenishment through the gas replenishing pipeline again. Finally, after the gas replenishment is completed, the residual gas in the gas replenishing pipeline is emptied again through the vacuum pipeline and collected in the tail gas collection device, thereby avoiding the environmental pollution problem caused by the leakage of sulfur hexafluoride gas. The problem occurs; the pressure reducing valve has pressure and flow indicating functions, so that the pressure and flow of sulfur hexafluoride gas flowing through the air supply pipeline during the inflation process can be monitored, and the pressure sensor located at the air outlet end of the air supply pipeline can feed back the current air pressure value inside the air chamber of the electrical equipment to the control element in real time, so that the operator can understand the current air supply status in real time, and effectively avoid the occurrence of overfilling or underfilling of the air chamber of the electrical equipment; the whole set of equipment can be moved and has good portability and flexibility; the control element mounting plate, circuit element mounting plate and gas path element mounting plate are all installed inside the cabinet, with good waterproof and dustproof effects, which helps to extend the overall service life of the equipment of the utility model.

[0024] 2. The touch screen is easy to operate and requires low professional technical skills of the operator; the voltage regulation module can flexibly adjust to a suitable working voltage according to the needs of the electrical equipment to be replenished, which helps to improve the flexibility and applicability of the device of this utility model; the wireless communication module can transmit the charging status data to a remote client, such as a mobile phone APP, without the need for an operator to monitor the operation on site throughout the process.

[0025] 3. The control component mounting plate, circuit component mounting plate and gas path component mounting plate are reasonably arranged and installed inside the cabinet. The control component mounting plate is located on the side close to the cabinet door to ensure convenient operation during use.

[0026] 4. When the sulfur hexafluoride storage bottle is installed inside the bottle body mounting groove, the locking chain connected to the two side frame fixing rings plays a limiting and restraining role on the sulfur hexafluoride storage bottle, thereby preventing the sulfur hexafluoride storage bottle from slipping out of the mounting groove, ensuring the safety of the gas replenishing device of the utility model when in use.

[0027] 5. The upper end of the sulfur hexafluoride storage bottle is inserted into the bottle body plug-in slot at the upper end of the cabinet, which ensures the overall safety of the sulfur hexafluoride storage bottle when it is inserted and installed inside the bottle body, and ensures the convenience of connecting the air outlet at the top of the sulfur hexafluoride storage bottle with the pressure reducing valve.

[0028] 6. The device also includes a heating element wrapped around the outside of the sulfur hexafluoride storage cylinder, the heating element being electrically connected to the control board. When the ambient temperature is too low, such as in winter, the heating element can be used to heat the sulfur hexafluoride storage cylinder to ensure that the sulfur hexafluoride gas inside the sulfur hexafluoride storage cylinder is quickly discharged, thereby further improving the efficiency of using the gas replenishment device of the utility model to inflate electrical equipment.

[0029] 7. A handle is provided on the outside of the cabinet, which helps to improve the convenience of moving the gas-supplementing device of the present invention; the diagonal support rods reinforce and support the cabinet, thereby preventing the cabinet from tilting or falling due to external forces, thereby improving the stability of the gas-supplementing device of the present invention when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a right front side perspective of a sulfur hexafluoride gas replenishing device of the present invention;

[0031] Figure 2 This is a right rear side perspective of a sulfur hexafluoride gas replenishing device of the present invention;

[0032] Figure 3 This is a perspective view of the right rear side of a sulfur hexafluoride gas replenishing device of the present invention (the sulfur hexafluoride storage bottle is hidden);

[0033] Figure 4 This is a left front side perspective of a sulfur hexafluoride gas replenishing device of the present invention (the cabinet door 1 is hidden);

[0034] Figure 5 This is a right end view of a sulfur hexafluoride gas replenishing device of the present invention (the sulfur hexafluoride storage bottle is hidden);

[0035] Figure 6 yes Figure 5 Cross-sectional view of the sulfur hexafluoride gas supply equipment along the AA direction;

[0036] Figure 7 This is a schematic diagram of the partial structure of a sulfur hexafluoride gas replenishing device of the utility model from the main perspective (the cabinet door 1 is hidden);

[0037] Figure 8 This is a diagram of the connection between the components on the gas path component mounting plate and the sulfur hexafluoride storage cylinder.

[0038] Figure: 1. Cabinet; 2. Roller; 3. Bottle mounting slot; 4. Sulfur hexafluoride storage bottle; 5. Heating element; 6. Control element mounting plate; 7. Circuit element mounting plate; 8. Gas path element mounting plate; 9. Pressure reducing valve; 10. Diagonal support rod; 11. Adapter storage box; 12. Solar photovoltaic panel; 1-1. Cabinet door 1; 1-2. Handle; 1-3. Bottle insertion slot; 1-4. Cabinet door 2; 1-5. Compartment; 1-6. Ear plate; 3-1. Main frame; 3-2. Side frame; 3-3. Arc support plate; 3-4 , horizontal support plate; 3-5, fixing ring; 6-1, touch screen; 7-1, voltage regulation module; 7-2, control main board; 7-3, wireless communication module; 8-1, three-way piece one; 8-2, solenoid valve one; 8-3, three-way piece two; 8-4, solenoid valve two; 8-5, three-way piece three; 8-6, air supply connector; 8-7, pressure sensor; 8-8, solenoid valve three; 8-9, moisture detection sensor; 8-10, three-way piece four; 8-11, air outlet pipe; 8-12, solenoid valve four; 8-13, vacuum pump. DETAILED DESCRIPTION

[0039] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0040] Example

[0041] like Figures 1 to 8 As shown, the utility model is a sulfur hexafluoride gas replenishing device, including a cabinet 1, wherein the outer wall of the cabinet 1 has a bottle mounting groove 3 for mounting a sulfur hexafluoride storage bottle 4, a roller 2 is mounted on the bottom of the cabinet 1, and a cabinet door 1-1 is mounted on the front opening of the cabinet 1. A control element mounting plate 6, a circuit element mounting plate 7, and a gas path element mounting plate 8 are mounted inside the cabinet 1. The control element mounting plate 6 is mounted on the control element mounting plate, and the circuit element mounting plate 7 is mounted on the control main board 7-2 electrically connected to the control element.

[0042] The gas circuit component mounting plate 8 is provided with a gas supply pipeline, a gas humidity detection pipeline and a vacuum pipeline. The gas outlet of the sulfur hexafluoride storage bottle 4 installed inside the bottle body mounting groove 3, the gas inlet end of the gas supply pipeline and the gas inlet end of the gas humidity detection pipeline are respectively connected to an interface of the tee piece 1 8-1. The gas supply pipeline is provided with an electromagnetic 1 8-2, a tee piece 2 8-3, an electromagnetic valve 2 8-4, a tee piece 3 8-5 and a gas supply connector 8-6 in sequence along the direction of gas travel. A pressure sensor 8-7 is also provided on an interface of the tee piece 3 8-5. The gas humidity detection pipeline is provided with an electromagnetic valve 3 8-8 and a water supply connector in sequence along the direction of gas travel. A water detection sensor 8-9 is provided, and the vacuum pipeline is provided with a solenoid valve 8-12 and an air pump 8-13 in sequence along the direction of gas travel. The air inlet end of the solenoid valve 8-8 is connected to an interface of the tee 8-1, and the air inlet end of the solenoid valve 8-12 is connected to an interface of the tee 8-3. The air outlet of the moisture detection sensor 8-9, the air outlet of the air pump 8-13, and the air inlet end of the air outlet pipe 8-11 are respectively connected to an interface of the tee 8-10. A pressure reducing valve 9 with pressure and flow indicating functions is further provided on the pipeline connecting the air outlet of the sulfur hexafluoride storage bottle 4 and the tee 8-1;

[0043] The solenoid valve 1 8-2, solenoid valve 2 8-4, solenoid valve 3 8-8, solenoid valve 4 8-12, moisture detection sensor 8-9 and air pump 8-13 are all electrically connected to the control main board 7-2.

[0044] Preferably, the control element is a touch screen 6-1. A voltage regulation module 7-1 and a wireless communication module 7-3 are also mounted on the circuit element mounting plate 7. Both the voltage regulation module 7-1 and the wireless communication module 7-3 are electrically connected to the control main board 7-2. Functional modules such as air evacuation, moisture detection, and air replenishment are also provided on the touch screen 6-1.

[0045] Further preferably, a battery for supplying electric energy to the voltage regulating module 7-1, the control main board 7-2 and the wireless communication module 7-3 is installed inside the cabinet 1, and a solar photovoltaic panel 12 connected to the battery is installed on the top of the cabinet 1.

[0046] Further preferably, the cabinet body 1 is provided with a plurality of compartments 1-5 at the lower end thereof, and further comprises an adapter storage box 11 for storing the gas supply adapter, and the battery and the adapter storage box 11 are respectively placed in one of the compartments 1-5.

[0047] Further preferably, the control element mounting plate 6, circuit element mounting plate 7 and air path element mounting plate 8 are fixed in sequence at the upper end of the interior of the cabinet 1 in a vertically parallel manner along the front-to-back direction, and the control element mounting plate 6 is located on the side close to the cabinet door 1-1.

[0048] Preferably, the rear side wall of the cabinet 1 is fixed on the main frame 3-1, and a side frame 3-2 extending to the rear side is fixed on the left and right sides of the main frame 3-1 respectively. A number of arc-shaped support plates 3-3 with concave arc sides facing the rear are arranged between the two side frames 3-2 along the longitudinal length direction, and a horizontal support plate 3-4 located on the bottom side is also fixed between the two side frames 3-2. The main frame 3-1, the two side frames 3-2, the number of arc-shaped support plates 3-3 and the horizontal support plate 3-4 are combined to form the bottle body mounting groove 3, and the roller 2 is installed at the lower end of the front side of the main frame 3-1 and is correspondingly located below the bottom of the cabinet 1.

[0049] Further preferably, the rear side surfaces of the two side frames 3 - 2 are also correspondingly provided with fixing rings 3 - 5 for passing through the locking chain to restrict the sulfur hexafluoride storage bottle 4 to the inside of the bottle body mounting groove 3 .

[0050] Further preferably, the upper end of the cabinet 1 has a bottle plug-in groove 1-3 extending to above the bottle mounting groove 3, the rear end of the bottle plug-in groove 1-3 is connected to the cavity inside the cabinet 1, the lower end is open, and the front side has a cabinet door 1-4. When the sulfur hexafluoride storage bottle 4 is installed in the bottle mounting groove 3, the upper end of the sulfur hexafluoride storage bottle 4 is plugged into the bottle plug-in groove 1-3.

[0051] Preferably, the device further comprises a heating element 5 wrapped around the outside of the sulfur hexafluoride storage bottle 4, wherein the heating element 5 is electrically connected to the control main board 7-2. Specifically, the heating element 5 is a heating blanket.

[0052] Further preferably, the upper ends of the outer walls of the left and right side walls of the cabinet body 1 are respectively provided with handles 1-2; the middle parts of the outer walls of the left and right side walls of the cabinet body 1 are respectively fixed with a number of ear plates 1-6, and also include a number of diagonal bracing rods 10, and the upper ends of the diagonal bracing rods 10 and the ear plates 1-6 respectively have mounting holes, and the upper ends of the diagonal bracing rods 10 are fixedly mounted on the ear plates 1-6 by bolt assemblies passing through the inside of the mounting holes.

[0053] The operating principle of the sulfur hexafluoride gas replenishing equipment of the utility model:

[0054] Step 1: When replenishing sulfur hexafluoride gas for an electrical device, take out a gas supply adapter that is compatible with the gas supply interface of the gas chamber of the electrical device from the adapter storage box 11, and then use the gas supply adapter to connect the gas supply connector 8-6 to the gas supply interface of the gas chamber of the electrical device;

[0055] Step 2: All solenoid valves are in a normally closed state. The emptying module is turned on through the touch screen 6-1, solenoid valve 1 8-2 and solenoid valve 4 8-12 are opened. The outlet pipe 8-11 can also be connected to an external tail gas recovery device, and the air pump 8-13 starts working to empty the gas in the air supply pipeline. After a period of time, the emptying module is closed through the touch screen 6-1, the pressure reducing valve 9 is opened, and the moisture detection module is turned on through the touch screen 6-1, solenoid valve 3 8-8 is opened. At this time, the sulfur hexafluoride gas flowing out of the sulfur hexafluoride storage bottle 4 enters the gas humidity detection pipeline. The moisture detection sensor 8-9 detects the moisture content of the sulfur hexafluoride gas entering the gas humidity detection pipeline and displays the detection result on the display window of the touch screen 6-1;

[0056] Step 3: If the moisture index is qualified, adjust the opening of the pressure reducing valve 9 so that the pressure gauge value at the outlet of the pressure reducing valve 9 is slightly greater than the rated gas supply pressure of the electrical equipment. Turn off the moisture detection module and turn on the gas supply module through the touch screen 6-1. Then, the solenoid valve 1 8-2 and the solenoid valve 2 8-4 are opened, and the sulfur hexafluoride gas flowing out of the sulfur hexafluoride storage cylinder 4 is supplied to the gas chamber of the electrical equipment through the gas supply pipeline. At the same time, the pressure sensor 8-7 displays the current pressure value inside the gas chamber of the electrical equipment in real time on the display window of the touch screen 6-1. When the pressure value inside the gas chamber reaches the rated gas supply pressure, close the pressure reducing valve 9 and turn off the gas supply module through the touch screen 6-1. If the moisture index is unqualified, the operator determines whether to replace the sulfur hexafluoride storage cylinder 4 with a new one based on the current humidity of the sulfur hexafluoride gas.

[0057] Step 4: After the gas replenishment is completed, the emptying module is turned on through the touch screen 6-1, and the solenoid valve 1 8-2 and the solenoid valve 4 8-12 are opened, and the air pump 8-13 starts working to empty the gas in the gas replenishment pipeline and collect it in the exhaust gas recovery device. After a period of time, the emptying module is closed through the touch screen 6-1 to complete the operation of replenishing sulfur hexafluoride gas to the gas chamber of the electrical equipment.

[0058] When there is a gas leak in the gas chamber of the electrical equipment and it needs to be repaired for a long time without power outage, the sulfur hexafluoride gas replenishing device of the present invention can also continue to replenish the gas chamber of the electrical equipment; when the external ambient temperature is low, the operating temperature of the heating element 5 can also be set through the touch screen 6-1, and after the heating element 5 is heated to the set temperature, the operations of steps 2 and 3 can be carried out.

[0059] The utility model discloses a sulfur hexafluoride gas replenishing device. When replenishing sulfur hexafluoride gas to the gas chamber of an electrical device, the device first evacuates the residual gas in the gas replenishing pipeline through a vacuum line and collects the gas in the tail gas collection device. Secondly, the gas flowing out of the sulfur hexafluoride storage bottle is tested for humidity through a gas humidity detection line to determine whether the gas humidity index meets the gas replenishment requirement. The gas chamber of the electrical device that needs gas replenishment is replenished with sulfur hexafluoride gas again through the gas replenishing pipeline. Finally, after the gas replenishment is completed, the device again evacuates the residual gas in the gas replenishing pipeline through a vacuum line and collects the gas in the tail gas collection device, thereby avoiding the problem of environmental pollution caused by sulfur hexafluoride gas leakage. The occurrence of; the pressure reducing valve has the function of pressure and flow indication, so that the pressure and flow of sulfur hexafluoride gas flowing through the air supply pipeline during the inflation process can be monitored, and the pressure sensor located at the air outlet end of the air supply pipeline can feed back the current air pressure value inside the air chamber of the electrical equipment to the control element in real time, so that the operator can understand the current air supply status in real time, and effectively avoid the occurrence of overfilling or underfilling of the air chamber of the electrical equipment; the whole set of equipment can be moved and has good portability and flexibility; the control element mounting plate, circuit element mounting plate and gas path element mounting plate are all installed inside the cabinet, with good waterproof and dustproof effects, which helps to extend the overall service life of the equipment of the utility model.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A sulfur hexafluoride gas replenishing device, characterized in that: The cabinet (1) comprises a bottle mounting groove (3) for mounting a sulfur hexafluoride storage bottle (4) on an outer wall surface of the cabinet (1), a roller (2) mounted on the bottom of the cabinet (1), a cabinet door (1-1) mounted on the front opening of the cabinet (1), a control element mounting plate (6), a circuit element mounting plate (7) and a gas path element mounting plate (8) mounted inside the cabinet (1), a control element mounted on the control element mounting plate (6), and a control main board (7-2) electrically connected to the control element mounted on the circuit element mounting plate (7); The gas circuit component mounting plate (8) is provided with a gas supply pipeline, a gas humidity detection pipeline and a vacuum pipeline. The gas outlet of the sulfur hexafluoride storage bottle (4) installed inside the bottle body mounting groove (3), the gas inlet end of the gas supply pipeline and the gas inlet end of the gas humidity detection pipeline are respectively connected to an interface of the tee piece 1 (8-1). The gas supply pipeline is provided with a solenoid valve 1 (8-2), a tee piece 2 (8-3), a solenoid valve 2 (8-4), a tee piece 3 (8-5) and a gas supply joint (8-6) in sequence along the direction of gas travel. A pressure sensor (8-7) is also provided on an interface of the tee piece 3 (8-5). The gas humidity detection pipeline is provided with a solenoid valve 3 (8-8) and a moisture sensor in sequence along the direction of gas travel. A detection sensor (8-9) is provided. The vacuum pipeline is provided with a fourth electromagnetic valve (8-12) and an air pump (8-13) in sequence along the direction of gas flow. The air inlet end of the third electromagnetic valve (8-8) is connected to an interface of the first three-way component (8-1), the air inlet end of the fourth electromagnetic valve (8-12) is connected to an interface of the second three-way component (8-3), the air outlet of the moisture detection sensor (8-9), the air outlet of the air pump (8-13), and the air inlet end of the air outlet pipe (8-11) are respectively connected to an interface of the fourth three-way component (8-10), and a pressure reducing valve (9) with pressure and flow indicating functions is further provided on the pipeline connecting the air outlet of the sulfur hexafluoride storage bottle (4) and the first three-way component (8-1); The solenoid valve 1 (8-2), solenoid valve 2 (8-4), solenoid valve 3 (8-8), solenoid valve 4 (8-12), moisture detection sensor (8-9) and air pump (8-13) are all electrically connected to the control mainboard (7-2).

2. The sulfur hexafluoride gas replenishing device according to claim 1, characterized in that: The control element is a touch screen (6-1); a voltage regulating module (7-1) and a wireless communication module (7-3) are also installed on the circuit element mounting plate (7); the voltage regulating module (7-1) and the wireless communication module (7-3) are both electrically connected to the control main board (7-2).

3. The sulfur hexafluoride gas replenishing device according to claim 2, characterized in that: A battery for supplying electric energy to the voltage regulating module (7-1), the control mainboard (7-2) and the wireless communication module (7-3) is also installed inside the cabinet (1), and a solar photovoltaic panel (12) connected to the battery is installed on the top of the cabinet (1).

4. The sulfur hexafluoride gas replenishing device according to claim 3, characterized in that: The cabinet (1) is provided with a plurality of compartments (1-5) at the lower end thereof, and also includes an adapter storage box (11) for storing a gas supply adapter. The battery and the adapter storage box (11) are respectively placed in one of the compartments (1-5).

5. The sulfur hexafluoride gas replenishing device according to claim 4, characterized in that: The control element mounting plate (6), circuit element mounting plate (7) and gas path element mounting plate (8) are fixedly arranged at the upper end of the interior of the cabinet (1) in a vertically parallel manner along the front-to-back direction, and the control element mounting plate (6) is located on a side close to the cabinet door (1-1).

6. The sulfur hexafluoride gas replenishing device according to claim 1, characterized in that: The rear side wall of the cabinet (1) is fixed on the main frame (3-1), and a side frame (3-2) extending toward the rear side is fixed on the left and right sides of the main frame (3-1) respectively. A plurality of arc-shaped support plates (3-3) with concave arc sides facing the rear are arranged between the two side frames (3-2) along the longitudinal length direction. A horizontal support plate (3-4) located at the bottom side is also fixed between the two side frames (3-2). The main frame (3-1), the two side frames (3-2), the plurality of arc-shaped support plates (3-3) and the horizontal support plate (3-4) are enclosed to form the bottle body mounting groove (3). The roller (2) is installed at the lower end of the front side of the main frame (3-1) and is correspondingly located below the bottom of the cabinet (1).

7. The sulfur hexafluoride gas replenishing device according to claim 6, characterized in that: The rear side surfaces of the two side frames (3-2) are also correspondingly provided with fixing rings (3-5) for passing through locking chains to restrict the sulfur hexafluoride storage bottle (4) to the inside of the bottle body installation groove (3).

8. The sulfur hexafluoride gas replenishing device according to claim 7, characterized in that: The upper end of the cabinet (1) is provided with a bottle plug-in groove (1-3) extending to above the bottle installation groove (3); the rear end of the bottle plug-in groove (1-3) is connected to the cavity inside the cabinet (1); the lower end is open; and the front side is provided with two cabinet doors (1-4); when the sulfur hexafluoride storage bottle (4) is installed inside the bottle installation groove (3), the upper end of the sulfur hexafluoride storage bottle (4) is plugged into the bottle plug-in groove (1-3).

9. The sulfur hexafluoride gas replenishing device according to claim 1, characterized in that: It also includes a heating element (5) wrapped around the outside of the sulfur hexafluoride storage bottle (4), and the heating element (5) is electrically connected to the control mainboard (7-2).

10. The sulfur hexafluoride gas replenishing device according to any one of claims 1 to 9, characterized in that: The upper ends of the outer walls of the left and right side walls of the cabinet body (1) are respectively provided with handles (1-2); the middle parts of the outer walls of the left and right side walls of the cabinet body (1) are respectively fixed with a plurality of ear plates (1-6), and also include a plurality of diagonal bracing rods (10), and the upper ends of the diagonal bracing rods (10) and the ear plates (1-6) are respectively provided with mounting holes, and the upper ends of the diagonal bracing rods (10) are fixedly mounted on the ear plates (1-6) by bolt assemblies passing through the interior of the mounting holes.

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